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WheelEvent deltaMode Property

❮ DOM Events ❮ WheelEvent

Example

Return the length unit of the delta values:

function myFunction(event) {
  var x = event.deltaMode;
  // 0 = pixels
  // 1 = lines
  // 2 = pages
}
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Definition and Usage

The deltaMode property returns a number representing the length unit of the scrolling values (deltaX, deltaY, and deltaZ).

0 = pixels
1 = lines
2 = pages

Note: This property is read-only.


Browser Support

Property
deltaMode 31 yes 17 Not supported 18

Syntax

event.deltaMode

Technical Details

Return Value: A Number, indicating the length unit of the delta values
Possible values:
0 = pixels
1 = lines
2 = pages

Related Pages

HTML DOM reference: WheelEvent deltaX Property

HTML DOM reference: WheelEvent deltaY Property

HTML DOM reference: WheelEvent deltaZ Property


❮ DOM Events ❮ WheelEvent